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Connection assistance apparatus and gateway apparatus

a technology of assistance apparatus and gateway apparatus, which is applied in the direction of television system, instruments, program control, etc., can solve the problems of significant performance degradation and achieve the effect of preventing performance degradation and preventing performance degradation

Inactive Publication Date: 2007-04-05
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] It is therefore an object of the present invention to provide a connection assistance apparatus which avoids unauthorized access and DoS attacks, prevents a performance degradation from occurring, and does not need to recognize different connections to gateway apparatus, and a gateway apparatus which avoids unauthorized access and DoS attacks and prevents a performance degradation from occurring.

Problems solved by technology

Since the gateway apparatus has its ports open at all times, it is exposed to DoS (Denial of Services) attacks and dictionary attacks, and has a possibility of suffering a significant performance degradation due to unauthorized access and DoS attacks.

Method used

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first embodiment

[0048] A connection assistance apparatus according to the present invention will be described in detail below.

[0049]FIG. 2 shows in block form a system for IPSec remote access using the connection assistance apparatus according to the first embodiment of the present invention. As shown in FIG. 2, a user terminal 20 and a gateway apparatus 30 are connected to the connection assistance apparatus, indicated by 10, through a network such as the Internet or the like. The user terminal 20 comprises a cellular phone or a PC (Personal Computer), for example. A digital home appliance 41 and a PC 42 are connected to the gateway apparatus 30 as devices under the control of the gateway apparatus 30, through a home network such as a LAN or the like. The user terminal 20 stores a software application for making IPSec connections. According to the stored software application, the user terminal 20 exchanges data with the gateway apparatus 30, and also exchanges data with the digital home appliance ...

second embodiment

[0100]FIG. 14 shows in block form a system for IPSec remote access using the connection assistance apparatus according to the present invention. As shown in FIG. 14, a user terminal 80 and a gateway apparatus 90 are connected to the connection assistance apparatus, indicated by 70, through a network such as the Internet or the like. A digital home appliance 101 and a PC 102 are connected to the gateway apparatus 90 as devices under the control of the gateway apparatus 90, through a home network such as a LAN or the like. The user terminal 80 stores a software application for making IPSec connections. According to the stored software application, the user terminal 80 exchanges data with the gateway apparatus 90, and also exchanges data with the digital home appliance 101 and the PC 102.

[0101] Though only one user terminal 80 and only one gateway apparatus 90 are shown in FIG. 14, a plurality of user terminals 80 and a plurality of gateway apparatus 90 may be connected to the connecti...

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PUM

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Abstract

A connection assistance apparatus avoids unauthorized access and DoS attacks, prevents a performance degradation from occurring, and does not need to recognize different connections to gateway apparatus. An authenticating unit authenticates the validity of a terminal by checking if the terminal is a valid terminal capable of communicating with a gateway apparatus according to IPSec in response to a request from a user who owns the terminal. If it is judged that the terminal is a valid terminal, then a preshared key generating unit generates a preshared key for the terminal and the gateway apparatus, and a firewall opening instruction information generating unit generates firewall opening instruction information to open a firewall of the gateway apparatus. A transmitting unit sends the preshared key to the terminal and the gateway apparatus and sends the firewall opening instruction information to the gateway apparatus.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is based upon and claims the benefits of priority from the prior Japanese Patent Application No. 2005-285983, filed on Sep. 30, 2005, the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] (1) Field of the Invention [0003] The present invention relates to a connection assistance apparatus and a gateway apparatus, and more particularly to a connection assistance apparatus for assisting in connecting a terminal and a gateway apparatus for IPSec communications therebetween and a gateway apparatus for performing IPSec communications with a terminal. [0004] (2) Description of the Related Art [0005] In recent years, there have been used in the art remote access systems for connecting to a gateway apparatus of a home network or an intranet such as a LAN (Local Area Network) through a network such as the Internet or the like and controlling a device such as a digital home appliance...

Claims

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Application Information

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IPC IPC(8): G06F15/16
CPCH04L63/0209H04L63/061H04L63/083H04L63/164
Inventor TAKEYOSHI, HARUYUKIMATSUOKA, NAOKI
Owner FUJITSU LTD
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